Quantitative Aptitude - Arithmetic Ability Questions

Q:

There are total 200 students in a school, of which 1/5th are boys. Find the number of girls in the school.

A) 160 B) 16
C) 140 D) 40
 
Answer & Explanation Answer: A) 160

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Q:

The perimeter and the breadth of a rectangle are 60 cm and 14 cm respectively. Find its area (in cm²)

A) 112 B) 448
C) 224 D) 336
 
Answer & Explanation Answer: C) 224

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Q:

If a + b = 10 and ab = 21, then the value of (a - b)2 is

A) 15 B) 16
C) 17 D) 18
 
Answer & Explanation Answer: B) 16

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Q:

If a - b = 2 and ab = 15, then what is the value of a3- b3?

A) 152 B) 112
C) 108 D) 98
 
Answer & Explanation Answer: D) 98

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Q:

If cosA = x, then x is

A) √(1 - cos2A) B) √(1 + sin2A)
C) √(1 + cos2A) D) √(1 - sin2A)
 
Answer & Explanation Answer: D) √(1 - sin2A)

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Q:

What is the value of sin (90° + 2A)[4  cos2(90°  2A)]?

A) 2(cos3 A – sin3 A) B) 2(cos3 A + sin3 A)
C) 4(cos6 A+ sin6 A) D) 4(cos6 A – sin6 A)
 
Answer & Explanation Answer: D) 4(cos6 A – sin6 A)

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Q:

In the following question, select the odd letters from the given alternatives.

A) M B) E
C) S D) W
 
Answer & Explanation Answer: B) E

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Filed Under: Odd Man Out
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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) JPM B) DJG
C) BHE D) SDA
 
Answer & Explanation Answer: D) SDA

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